Across
- 1. Speed past
- 5. Urgent speed
- 7. Sci-fi faster-than-light speed
- 9. Very fast
- 11. Rate of motion
- 17. A short fast run
- 18. Hurry up
- 20. Mass in motion
Down
- 2. Speed of sound
- 3. Fast plane
- 4. Super quick or bright
- 6. Quick as a bird
- 8. Speed of walking or running
- 10. Increase in speed
- 12. Storm's fast spark
- 13. Speed up a process
- 14. Opposite of slow
- 15. A quick movement
- 16. Engine speed booster
- 19. Fast-moving group